I'm sorry I must have missed the question. I am not sure what your exact question was, but I'll take a guess.
- Why does the Church permit someone like Joe Biden to receive Holy Communion?
- Will they do anything about it?
I'm afraid, the answer will be unsatisfactory. Not all Bishops are on the same page about this. The Congregation for the Doctrine of the Faith has already set guidelines for this in a (2004) letter to the US Bishops from then Cardinal Ratzinger (later Pope [Emeritus] Benedict XVI). That letter was buried by the notorious Theodore Mccarrick.
While the USCCB is supposedly drafting a statement of policy regarding this matter, don't expect much. Even if they wrote a really good work, it wouldn't make much of a difference, because it is up to individual Bishops to do the right thing in their dioceses, and Biden will only go to places he knows he will be able to receive Communion, (through advanced planning), so that he will not be embarrassed.
Biden is a politician and he knows how to play the game; and as long as the Bishops are divided, he will play that to his advantage.
Pray for the Bishops, because sadly, many are in grave danger for their souls. The faithful have been scandalized by their [bishops] politicizing everything and weak adherence to matters of the utmost importance in faith.
Those failures will not go unnoticed by our Lord, and the judgment He metes out will be harsh.